From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14839 invoked by alias); 24 Jan 2011 18:38:37 -0000 Received: (qmail 14785 invoked by uid 22791); 24 Jan 2011 18:38:36 -0000 X-SWARE-Spam-Status: No, hits=-2.7 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_LOW X-Spam-Check-By: sourceware.org Received: from smtpout.karoo.kcom.com (HELO smtpout.karoo.kcom.com) (212.50.160.34) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 24 Jan 2011 18:38:32 +0000 Received: from 213-152-38-55.dsl.eclipse.net.uk (HELO [192.168.0.5]) ([213.152.38.55]) by smtpout.karoo.kcom.com with ESMTP; 24 Jan 2011 18:38:30 +0000 Message-ID: <4D3DC72C.6000103@dronecode.org.uk> Date: Mon, 24 Jan 2011 18:38:00 -0000 From: Jon TURNEY Reply-To: cygwin-xfree@cygwin.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 MIME-Version: 1.0 To: cygwin-xfree@cygwin.com, kdo@cosmos.phy.tufts.edu Subject: Re: AIGLX References: <4D375370.8020005@dronecode.org.uk> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Mailing-List: contact cygwin-xfree-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-xfree-owner@cygwin.com Reply-To: cygwin-xfree@cygwin.com Mail-Followup-To: cygwin-xfree@cygwin.com X-SW-Source: 2011-01/txt/msg00033.txt.bz2 On 21/01/2011 17:52, Ken Olum wrote: > From: Jon TURNEY > Date: Wed, 19 Jan 2011 21:11:12 +0000 > > Anyhow, can you try with 'GLWIN_NO_WGL_EXTENSIONS=1 XWin -wgl -multiwindow' > > Thanks. I did this and it worked. However, for a particular paraview > dataset that I happened to have lying around it is slower than direct > rendering by a factor of about 2. That may be related to the fact > that this particular scene has wiggly tubes with structure too small > to show on the screen, so there is a high ratio of data to things that > actually get displayed. For the same scene, unaccelerated indirect > rendering is much slower than accelerated, perhaps by a factor of 10. > So when you can't use direct rendering, acceleration is a big help. Ok, thanks very much for trying it out anyhow. It's very useful to have a data point like that for an actual real-world use case :-) Another factor is possibly that you aren't going to get awesome hardware accelerated performance with an Intel 845G, either. > Once I say -wgl, direct rendering no longer works. That is, if I > don't set LIBGL_ALWAYS_INDIRECT, then I get a long (infinite?) > sequence of errors like this: > > X Error: BadMatch (invalid parameter attributes) 8 > Major opcode: 73 (X_GetImage) > Resource id: 0xa0039a I can't reproduce this problem. Can you give me a few more details on the host which is running paraview: unix version, version of libGL and version of paraview? Do you get that error with other OpenGL applications (e.g. glxinfo) or just paraview? -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/